Here the author of 1491, which portrayed the pre-Columbian Americas, tells the rest of the story, starting with the year following Columbus's linking the New World with the Old. The Columbian Exchange, as researchers call it, is the reason there are tomatoes in Italy, oranges in Florida, chocolates in Switzerland, and chili peppers in Thailand. More important, creatures the colonists knew nothing about hitched along for the ride—earthworms, mosquitoes, cockroaches, honeybees, dandelions, African grasses, bacteria, fungi, viruses, and rats of every description—in what biologists consider the greatest single event since the extinction of the dinosaurs.

"Voltaire would have loved Charles C. Mann's outstanding new book, 1493. In more than 500 lively pages, it not only explains the chain of events that produced those candied fruits, nuts and gardens, but also weaves their stories together into a convincing explanation of why our world is the way it is.... Mann has managed the difficult trick of telling a complicated story in engaging and clear prose while refusing to reduce its ambiguities to slogans. He is not a professional historian, but most professionals could learn a lot from the deft way he does this.... Most impressive of all, he manages to turn plants, germs, insects and excrement into the lead actors in his drama while still parading before us an unforgettable cast of human characters. He makes even the most unpromising-sounding subjects fascinating. I, for one, will never look at a piece of rubber in quite the same way now.... The Columbian Exchange has shaped everything about the modern world. It brought us the plants we tend in our gardens and the pests that eat them. And as it accelerates in the 21st century, it may take both away again. If you want to understand why, read 1493."—NYTBR